Has ample daffodils the centre released free — they’re round bulbs (10)

I believe the answer is:

lampshades

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'round bulbs' is the definition.
The definition and answer can be both man-made objects as well as being plural nouns.
Perhaps they are linked in a way I don't understand?

'has ample daffodils the centre released free' is the wordplay.
I cannot quite see how this works, but
an anagram of 'has' is 'sha' which is present in the answer.
This may be the basis of the clue (or it may be nonsense).

'they're' is the link.

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I've seen this clue in The Times.

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